Edge-mounted lock for a door

ABSTRACT

A lock mechanism for a door comprises a plurality of lock cylinders which are mounted on edge rather than flush with the door and which are interconnected through the door by means of a slide bar. The slide bar actuates a lever in response to appropriate movement of tabs on the lock cylinders, to lock or unlock the door by extending or retracting one or more bolts.

United States Patent 1 1 3,633,389

[72] Inventor William J. Horgan,Jr. [56] References Cited AlleghenyUNITED STATES PATENTS QE J' 23 795,897 8/1905 Criqui 292/33 1,651,39412/1927 Kaufman... 70 100 [45] Patented Jan.ll, 1972 1,719,203 7/1929Taussig.. 70 100 [73] Assgnee g mf f fitg 1,929,985 12 1933 Main 70 357Continu tion-ih-partofa licationSer No 2049939 8/1936 Bales" 292/334875229 Nov 10 1967 55w 61561111611611 2l47826 2/1939 292/164 1 1 12,240,400 4/1941 Johnson 292/335 This application Nov. 9, 1970,Ser. No.3 I 18 298 "964 Holmes 70H00 37,717

Primary Examiner-Albert G. Craig, Jr.

Attorney- Paul and Paul [54] EDGE-MOUNTED LOCK FOR A DOOR 16 Claims, 6Drawing Figs.

[52] U.S.Cl 70/120, 16/1 1 1, 70/45 1,292/139, 292/140, 292/337,292/DlG. 56, 292/DIG. 57

ABSTRACT: A lock mechanism for a door comprises a plurality oflockcylinders which are mounted on edge rather than flush with the door andwhich are interconnected through the door by means of a slide bar. Theslide bar aetuates a lever in [51] Int. Cl EIi)055bb695//(:)(2 responseto appropriate movement of tabs on the lock cylim [50] Field of Search70/79, 82, ders to lock or unlock the door y extendmg or retrac mg oneor more bolts.

100,116,120,123, 127, 134,139, 156, 370, 451, DIG. 60, DIG. 63; 292/34,37,139, 166,167, DIG. 56, DIG. 57

PATENTEDJANI 1 m2 31633339 Fig, 2 INVEI-JTOR.

William J.H0rg0n, Jr.

W MY'M ATTOR NEYS.

slsaaiass PATENIEU Jun 1 m2 SHEET 2 [IF 3 INVENTOR. William J. Horgon,Jr.

M v" M ATTORNEYS EDGE-MOUNTED LOCK F OR A DOOR CROSS-REFERENCE TORELATED APPLICATION BACKGROUND OF THE INVENTION This invention relatesto locks particularly adapted for use with glass doors, and inparticular, to locks of the type having vertically operative lock bolts.

In the prior art such bolt mechanisms were generally disposed within thedoor frame itself. With solid glass doors this is practically impossibleunless the door frame supporting the glass is bulky enough toaccommodate the bolt mechanism. Further, the heavy bolts were difiicultto actuate.

I have developed a number of lock mechanisms utilizing lock housingsmounted on the plane surface of the glass door intermediate the verticaledges of the door, and preferably having a lock cylinder on both sidesof the door.

One of the concepts which I have originated is that of mounting thehardware inwardly from the edge of the door in a separate lock housingwhich can be integrated with the handle of the door, said housingaccommodating a lock which is edge mounted rather than flush mountedwith respect to the door. This concept was disclosed in my priorcopending application referred to above. Because of the heavy bulky boltmechanism, it is desirable to have some means of lightening the load sothat the mechanism can be readily actuated by a single key in a singlelock cylinder. Accordingly, my invention also makes provision for a lockmechanism which meets this desirable end.

SUMMARY OF THE INVENTION In the preferred embodiment, my inventioncomprises an edge mounted plural cylinder lock mechanism which can bemounted inwardly from the extreme vertical edge of the door. Themechanism comprises a plurality of housings, one disposed on each sideof the door. Mounted in each housing is a lock cylinder. The lockcylinders are interconnected through a hole in the door by means of aslide bar. The slide bar actuates a lever in response to appropriatemovement of tabs on either one of the lock cylinders. The lever in turnactuates a bolt mechanism to raise or lower one or more bolts forlocking and unlocking the door respectively.

Accordingly, it is an object of my invention to provide a new and novellock mechanism for use particularly with glass doors.

It is another object of my invention to provide a new vertical bolt lockmechanism for glass doors, which need not be mounted in the frame of thedoor.

It is a further object to provide a bolt mechanism of the type describedwhich provides a means for edge mounting the lock cylinders so that theentire lock mechanism housing can be utilized to better advantage from adesign standpoint.

It is a further object to divide a readily operable vertical boltmechanism which can be easily manually actuated by means of a single keyin an edge mounted lock cylinder.

These and other objects of my invention will become apparent from thefollowing description with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of aglass door having associated therewith handles and lock housings of atype using vertical bolts;

FIG. 2 is a foreshortened enlarged section taken as indicated by thelines and arrows 2-2 in FIG. 1 showing the bolt mechanism in extendedposition so that the bolts are disposed in the structure surrounding thedoor;

FIG. 3 is a further enlarged sectional view partially broken away ofaportion of the mechanism shown in FIG. 2;

FIG. 4 is a sectional view taken as indicated by the lines and arrows 44in FIG. 3;

FIG. 5 is an enlarged elevation of a portion of the apparatus shown inFIGS. 2 and 3 showing the parts in an alternate position with theoverall housing shown in phantom for the sake of clarity; and

FIG. 6 is a view taken as indicated by the lines and arrows 6-6 in FIG.3 with the lock cylinders shown in phantom.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Although specific forms of theinvention have been selected for illustration in the drawings, and thefollowing description is drawn in specific terms for the purpose ofdescribing these forms of the invention, this description is notintended to limit the scope of the invention which is defined in theappended claims.

Referring to FIG. 1, a glass door 10 includes a glass panel without anyframe. I have provided a lock mechanism of the vertical bolt type whichin this embodiment comprises a plurality of housings designatedgenerally 14 and 16. The housings are oppositely disposed on either sideof the glass door spaced intermediate the vertical edges thereof and areintegrated with the handles 15 and 17 respectively. In this embodimentthe housing 16 serves as a means for mounting one lock cylinder 18 (FIG.2) in what I describe as an edge mounted condition, that is, thecylinder is disposed with its axis parallel to the plane of the face ofthe glass door and its cylindrical surface lying substantially on edgewith respect to the main plane of the door and thus the tab of thecylinder operates in a plane which is substantially parallel to thevertical edge of the door. This differs from a flush mounted conditionwherein the back of the lock cylinder would be disposed flush againstthe face of the door and the tab would operate in a plane which isparallel to the plane of the vertical face of the door.

The housing 14 is composed of a plurality of members including thehandle 15. The entire housing 14 is fixedly connected to the door and tothe housing 16 in any suitable manner, such as, by bolts passing throughthe glass (not shown). The housing 14 comprises a rigid member 21 whichis interfitted with a cover 23. The housing 14 contains the verticalbolt lock mechanism and a lock cylinder 20.

To actuate the bolts I have provided a pivotally mounted lever means.This lever means comprises a pivot arm 60 (FIG. 3) which is pivotallymounted at one end to a bracket 62 by means of a spring pin 64 passingthrough the bracket and the pivot arm. The bracket is held in place inthe housing by any suitable means such as the screw 66 passing throughthe member 21. The bracket 62 extends across the width of the channelformed between the sidewalls of the cover portion 23 and terminates in arelieved channel-shaped portion 68 which supports a T-shaped insert 70.The insert is preferably made of a hard rubber material such as Butylrubber.

The pivot arm 60 is pivotable about the pin 64. Extending from oppositefaces of the pivot arm 60 is a pair of coaxial cylindrical lugs 72, 73.The lug 73 is positional to be engaged by the tab 19 of the lockcylinder 20 as the tab rotates counterclockwise with the mechanism inthe position to lock the door as will be more fully explainedhereinafter. The lug would provide the same functional relationship withthe tab 19 if the lock cylinder 20 was mounted on the opposite side ofthe housing 14 when viewed as in FIG. 2.

Between the two lock cylinders 18 and 20 is a crossover bar 22 whichpasses through a hole 24 in the glass panel 10. The bar 22 is a drivinglink between the lock cylinders and the lock mechanism. The crossoverbar 22 is mounted horizontally and comprises an elongated body having ayoke 26 at one end which is pin connected to the pivot arm 60 by meansof the pin 28. Other than this connection, the crossover arm is freefloating in that the other end rests on a ball bearing 30 which isrotatably mounted by any suitable means in the frame of the housing 16.

Extending upwardly from this free floating left-hand end are two fingersor flanges 40 and 42. Each extends across the full width of thecrossover bar and the facing terminal surfaces thereof are rounded as at41, 43 respectively. These fingers are spaced apart from one another insuch a manner that the extending tab 12 of the lock cylinder 18 will,when rotated clockwise when viewed as in FIG. 3), pass by the tab 42 andengage the tab 40 thereby driving the crossover bar to the left (whenviewed as in FIG. 3) to the position shown in FIG. as the tab continuesto rotate clockwise. The result of this action is shown in FIG. 5wherein the clockwise arrows show the path taken by the tab 12. If thekey in the lock cylinder 18 were turned in the opposite direction thetab 12 were to be driven in a counterclockwise direction and if partswere disposed as they are in FIG. 5, the tab 12 would pass the finger 40and engage the finger 42 and as it continued to rotate in acounterclockwise direction would drive the crossover bar to the right,back to the position shown in FIG. 3.

Since the crossover bar 22 is pin connected to the pivot arm 60, and thepivot arm is pin connected to the bracket 62, the movement of thecrossover bar just described in response to the movement of the tab 12will cause a corresponding pivotal movement of the pivot arm 60. Thus,when the crossover bar is moved to the left the pivot arm is rotated tothe left and when the crossover bar is moved to the right the pivot armis pivoted to the right.

As will be noted from the drawings, the terminal portion of the yoke 26is rounded as at 36 in FIG. 3. This rounded portion 36 will be engagedby the tab 19 of the cylinder 20 as it rotates in a clockwise directionto move the pivot arm to the left from the position shown in FIG. 2 tothe position shown in FIG. 5. When a tab is initially rotated it willpass the lug 73 and it will continue to rotate past the final positionshown in FIG. 5. When the tab is reversed in its direction of rotationit will pass the rounded portion 36 and engage the lug 73 as describedhereinabove, to drive the pivot arm to the right from the position shownin FIG. 5 to the position shown in FIG. 3.

The pivotal movement of the pivot arm 60 actuates the bolt mechanism.With the full height hardware shown in the figures, this mechanismconsists, most preferably, of a plurality of bolts which are verticallymounted to extend into the structure (200 FIG. 2) surrounding the doorand to be retracted within the lock housing. In the embodiment shown theupper locking bolt comprises a square bolt 80. The lower end of the bolt80 terminates in a yoke having a bar 82 pivotally connected thereto bythe pin 81.

In accordance with the present invention I have provided a means wherebythe bolt mechanism is made considerably easier to operate. This meanscomprises a plurality of bearings attached to the bolt. It is preferableto have four such bearings, as at 83, 84, 85 and 36 disposed on oppositesides of the bolt 80 and proximate to the ends thereof. The bearings arepreferably ball bearings and are retained on the bolt by means of guidepins 87 which pass through and engage the inner races of the bearingsand are fixedly engaged in holes in the bolt 80. It is preferable tohave washers (not shown) disposed between the vertical edges of bolt 80and the ball bearings.

The bearings and bolt ride in the channel formed by the cover 23 and abearing block 88 attached to the member 21.

I have found that this arrangement considerably reduces the frictionalresistance to movement of the bolt and in part provides an effectivemeans for raising and lowering the bolt by the use ofa single key andlock cylinder. The remaining linkage for accomplishing this result inresponse to pivotal movement of the pivot arm 60 comprises a link 100which is pivotally mounted intermediate the ends thereof to a bracket102 by means of a pin 104. The bracket is held in fixed position in thehousing by any suitable means such as screws (not shown) passing throughthe member 21. The link 100 is pivotally connected at one end to the bar82 by the pin 108 and is pivotally connected at the other end to the bar110 by the pin 112. The bar 110 is pivotally connected by the pin 111 tothe connecting rod 113 which passes through the handle portion of theedge-mounted housing 14 and terminates at each end in a hook-shapedportion which hooks towards the glass portion of the door so as toprovide a means for such connection. The connecting rod is pivotallyconnected at its bottom end by the pin 117 to the bar 115. The bar 115is pivotally connected to a slide plate assembly designated generally 114.

The slide plate assembly comprises two flat plates 116 and 118 (FIG. 4)which are held in spaced relation by means ofa spacer 120. The spacer isfixed between the plates in any suitable manner as by riveting. The bar115 is pivotally engaged with the upper end of the slide plate assemblyas by means of the rivet 122. The slide plate assembly also includesbearings which will be more fully described hereinafter in connectionwith the function of the plate assembly and its movement in the housing.

The slide plate assembly provides a means for engaging the pivot arm 60whereby on appropriate movement of the pivot arm the slide plateassembly is raised or lowered vertically in order to raise or lower thebolt 80. This means comprises a cam and follower mechanism associatedwith the slide plate assembly and the pivot arm. The spacer 120 providesthe cam surface which is flat and is disposed on an angle to thevertical line of movement of the locking bolts. The cam surface 130 isengaged by a portion of the pivot arm 60. This portion comprises mostpreferably a ball bearing 132 held for rotation in the yoked end of thepivot arm 60 by means of a lock pin 134. The lock pin 134 extends beyondboth sides of the yoked portion of the pivot arm 60 as clearly shown inFIG. 4 for reasons which will be more fully explained hereinafter. Asthe pivot arm 60 is rotated from the position shown in FIG. 3 to theposition shown in FIG. 5 the surface of the ball bearing 132 will engagethe surface 130 of the cam of the spacer 120 and as the bearingcontinues to rotate in a counterclockwise direction when viewed as inFIG. 3 the slide assembly 114 will be pushed vertically upwardly in thelock housing thereby forcing the locking bolt 80 to be retracted intothe housing as shown in FIG. 5. On counterrotation of the pivot arm, theplate assembly will be pulled downwardly in the housing by gravitythereby extending the bolt 80.

The plates 116 and 118 have similar S-shaped slots 136 and 138respectively therein. The extending ends of the pin 134 are disposed inthese slots as shown in FIG. 4. The slots are so shaped that the ends ofthe pin 134 basically ride substantially in the center of the slotthroughout the entire travel of the pivot arm. The principal function ofthe end of the pin is to prevent the opening of the mechanism when it isin the closed position as shown in FIG. 2 by other than a key actuatingthe pivot arm 60. Thus, if one were to push downwardly on the bolt 80 inan attempt to raise the rod 110 and the assembly 1 14, the lower portionofthe right-hand terminal end of the S- shaped slots would engage thepin 134 after perhaps less than one-eighth inch of travel and preventthe mechanism from being jimmied opened. At the other end of the slotthe pins do not engage the upper or lower ends of the S-shaped slots andthe ball bearing 132 passes slightly over center of the corner of thespacer 120 as it leaves the surface 130. This overcenter action preventsthe mechanism from accidentally extending the bolts when they areretracted.

When the mechanism is in the position shown in FIG. 2 the assembly restson the upper cross member of the T-shaped insert 70 which, as previouslystated, is preferably made of a hard rubber material. This has theeffect of deadening the sound and positively stopping the action of theassembly.

The operation of the device requires minimal effort to move the slideplate assembly by virtue of the fact that the assembly is mounted formovement on ball bearings. Four such bearings are shown in FIG. 3 Eachof the bearings is mounted between axial spacer elements such as washersbetween the plates 116 and l 18 so that they are freely rotatable abouttheir axis. The bearings along the left-hand side of the slide plateassembly when viewed as in FIG. 3 bear against the member 21. Thebearings along the right-hand side bear against the cover member 23.

The lower dead bolt portion of the mechanism is exactly the same as theupper dead bolt portion and the connecting bars are also exactly thesame with the exception that there is no need for a link such as thelink 1100 or for a bracket such as the bracket 102 or the additionalconnecting rod and linkage around the handle. Rather, the lower bolt 180is pivotally connected to a bar 182 by means of a pin 183. The entirearrangement otherwise is exactly the same and includes four ballbearings arranged as described in relation to the bolt 80.

Thus, as the slide plate assembly is moved upwardly as the pivot arm 60rotates to the left from the position shown in FIG. 3, the bolt 180 isretracted as is the bolt 80, and likewise when the pivot arm is movedback to the right to the position shown in FIG. 2 the slide plateassembly moves downwardly thereby extending the bolt 180 and throughactuation of the link 100 extending the bolt 80, thereby locking thedoor.

It will be noted that in my prior copending application referred toabove the mechanism shown included a counterbalancing spring. No suchspring is required for the mechanism shown in this application, sincefriction has been reduced to a minimum at all points of contact and inactual practice simple rotation of a key in a lock cylinder will causethe mechanism to be actuated either to extend or retract the lock boltswith a minimal manual effort.

it will be understood that various changes in the details, materials andarrangement of parts which have been described and illustrated in orderto explain the nature of this invention, may be made by those skilled inthe art within the principle and scope of the invention as expressed inthe appended claims. In particular, it will be understood that thedevice can work with a single lock cylinder mounted on either'lockhousing. Further, it will be understood that the device can work with asingle locking bolt either at the top or a dead bolt at the bottom.

It will further be understood that the Abstract of the Disclosure" setforth above is intended to provide a nonlegal technical statement of thecontents of the disclosure in compliance with the Rules of Practice ofthe United States Patent Office, and is not intended to limit the scopeof the invention described and claimed herein.

What is claimed is:

l. A lock mechanism for a door, comprising:

a. a plurality of lock cylinder means having movable locking tab meansconnected thereto, said locking tab means being movable in planes otherthan parallel to the face of said door;

a pivot arm pivotable about its fulcrum;

actuating means connected to said pivot arm and engageable by saidlocking tab means to pivot said pivot arm in response to movement ofsaid locking tab means; and

d. locking bolt means comprising at least one lock bolt and slidemechanism movable in response to pivotal movement of said pivot arm forextending or retracting said lock bolt with respect to said mechanism.

2. The invention of claim 1 wherein said actuating means comprises a lugattached to said pivot arm and a crossover bar mechanism attached tosaid pivot arm, said crossover bar mechanism passing through said doorand being movable in response to movement of said pivot arm or saidlocking tab means.

3. The invention of claim 2 wherein said crossover bar mechanismcomprises a crossover driver pivotally connected at one end to saidpivot arm and extending through said door and being supported at itsfree end for transverse movement.

4. The invention of claim 2 wherein said crossover driver has meansthereon for engaging the locking tab means of one of said lock cylindermeans.

5. The invention of claim 3 wherein said support comprises a ballbearing mounted in said mechanism and disposed to support said crossoverbar on its bearing surface.

6. The invention of claim 4 wherein the means on said crossover driverfor engaging the tab means comprises a plurality of upwardly extendingfingers.

7. The invention of claim 1 wherein said lock bolt operates vertically.

8. The invention of claim 1 wherein said lock bolt is connected to aslide assembly, said slide assembly being cam actuated in response tomovement of said pivot arm.

9. The invention of claim 5 wherein said cam actuation is provided by asloped surface on said slide assembly engaging a portion of said pivotarm.

10. The invention of claim 1 wherein said bolt is disposed at leastpartially within the frame of said mechanism and bearing means areattached to said bolt engaging said frame.

11. The invention of claim 10 wherein said bearing means comprises aplurality of ball bearings.

12. The invention of claim 10 wherein a plurality of said bolts areprovided in said mechanism extending from opposite ends of the framethereof.

13. The invention of claim 8 wherein said slide assembly comprises aplurality of plates fixedly positioned with respect to one another andhaving mounted therebetween a plurality of bearings for engagement withthe frame of said lock mechanism.

14. The invention of claim 9 wherein the portion of the pivot armengaging the sloping surface on the slide assembly comprises thecylindrical surface of a rotatable ball bearing which is rotatablyattached to said pivot arm.

15. The invention of claim 8 wherein said slide assembly comprises aplurality of plates fixedly spaced with respect to one another, saidplates having substantially S-shaped apertures therein, and pin meansextend from said pivot arm and into said apertures, said pin means beingso positioned as to provide a means for positively preventing said slidemeans from moving when it and the pivot arm are in a predeterminedposition whereby said mechanism is prevented from being unlocked withoutappropriate movement of the pivot arm.

16. The invention of claim 1 wherein said arm is pivoted from a fixedbracket attached to said mechanism, said bracket including a resilientportion, and said lock bolt is connected to a slide assembly, said slideassembly being cam actuated in response to movement of said pivot armand being positioned to engage said resilient portion upon locking ofsaid mechanism.

1. A lock mechanism for a door, comprising: a. a plurality of lockcylinder means having movable locking tab means connected thereto, saidlocking tab means being movable in planes other than parallel to theface of said door; b. a pivot arm pivotable about its fulcrum; c.actuating means connected to said pivot arm and engageable by saidlocking tab means to pivot said pivot arm in response to movement ofsaid locking tab means; and d. locking bolt means comprising at leastone lock bolt and slide mechanism movable in response to pivotalmovement of said pivot arm for extending or retracting said lock boltwith respect to said mechanism.
 2. The invention of claim 1 wherein saidactuating means comprises a lug attached to said pivot arm and acrossover bar mechanism attached to said pivot arm, said crossover barmechanism passing through said door and being movable in response tomovement of said pivot arm or said locking tab means.
 3. The inventionof claim 2 wherein said crossover bar mechanism comprises a crossoverdriver pivotally connected at one end to said pivot arm and extendingthrough said door and being supported at its free end for transversemovement.
 4. The invention of claim 2 wherein said crossover driver hasmeans thereon for engaging the locking tab means of one of said lockcylinder means.
 5. The invention of claim 3 wherein said supportcomprises a ball bearing mounted in said mechanism and disposed tosupport said crossover bar on its bearing surface.
 6. The invention ofclaim 4 wherein the means on said crossover driver for engaging the tabmeans comprises a plurality of upwardly extending fingers.
 7. Theinvention of claim 1 wherein said lock bolt operates vertically.
 8. Theinvention of claim 1 wherein said lock bolt is connected to a slideassembly, said slide assembly being cam actuated in response to movementof said pivot arm.
 9. The invention of claim 5 wherein said camactuation is provided by a sloped surface on said slide assemblyengaging a portion of said pivot arm.
 10. The invention of claim 1wherein said bolt is disposed at least partially within the frame ofsaid mechanism and bearing means are attached to said bolt engaging saidframe.
 11. The invention of claim 10 wherein said bearing meanscomprises a plurality of ball bearings.
 12. The invention of claim 10wherein a plurality of said bolts are provided in said mechanismextending from opposite ends of the frame thereof.
 13. The invention ofclaim 8 wherein said slide assembly comprises a plurality of platesfixedly positioned with respect to one another and having mountedtherebetween a plurality of bearings for engagement with the frame ofsaid lock mechanism.
 14. The invention of claim 9 wherein the portion ofthe pivot arm engaging the sloping surface on the slide assemblycomprises the cylindrical surface of a rotatable ball bearing which isrotatably attached to said pivot arm.
 15. The invention of claim 8wherein said slide assembly comprises a plurality of plates fixedlyspaced with respect to one another, said plates having substantiallyS-shaped apertures therein, and pin means extend from said pivot arm andinto said apertures, said pin means being so positioned as to provide ameans for positively preventing said slide means from moving when it andthe pivot arm are in a predetermined position whereby said mechanism isprevented from being unlocked without appropriate movement of the pivotarm.
 16. The invention of claim 1 wherein said arm is pivoted from afixed bracket attached to said mechanism, said bracket including aresilient portion, and said lock bolt is connected to a slide assembly,said slide assembly being cam actuated in response to movement of saidpivot arm and being positioned to engage said resilient portion uponlocking of said mechanism.